Sink



FIG. 1 is a perspective view taken from the top, front and right side of a sink showing our new deign;

FIG. 2 is a perspective view of the bottom thereof;

FIG. 3 is a top plan view of the sink shown in FIG. 1;

FIG. 4 is a bottom view of the sink shown in FIG. 1;

FIG. 5 is a front side view of the sink shown in FIG. 1; and,

FIG. 6 is a rear side view of the sink shown in FIG. 1. 

The ornamental design for a sink, as shown and described. 